répondre à cette question

aléatoire Question

I need to make a project of science need help please???

i need to make aproject of chemistry like the volcan that we can make in our homes i really need it par 9 feb please help me
 chagrin91 posted il y a plus d’un an
next question »

aléatoire Réponses

bored2pieces2 said:
toi can do one of the following:

Does the presence of detergent in water affect plant growth? In what ways? What is the implication regarding water pollution?

Does magnetism affect the growth of plants? In what way?

How does the shape of an ice cube affect how quickly it melts?

Do the same types of mold grow on all types of bread? Are certain preservatives better at inhibiting dangerous molds than others?

Is the nutritional content of different brands of a vegetable (e.g., canned peas) the same? How much variation is there in any donné product?

Do consumers prefer bleached paper products ou natural-color paper products? What factors affect the preference? Age? Socio-economic status? Gender?

Is a seed affected par its size? Do different size seeds have different germination rates ou percentages? Does seed size affect the growth rate ou final size of a plant?

How does cold storage affect the germination of seeds? Factors toi can control include the type of seeds, length of storage, temperature of storage, and other variables, such as light and humidity.

How close does a plant have to be to a pesticide for it to work? What factors influence the effectiveness of a pesticide (rain? light? wind?)? How much can toi dilute a pesticide while retaining its effectiveness? How effective are natural pest deterrents?

What is the effect of a chemical on a plant? toi can look at natural pollutants (e.g., motor oil, runoff from a busy street) ou unusual substances (e.g., orange juice, baking soda). Factors that toi can measure include rate of plant growth, leaf size, life/death of the plant, color of plant, and ability to flower/bear fruit.
select as best answer
posted il y a plus d’un an 
*
thank toi but can toi explain how i can make aproject out of it like an experiment ou something
chagrin91 posted il y a plus d’un an
next question »